User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; de; rv:1.8.0.3) Gecko/20060426 Firefox/1.5.0.3 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; de; rv:1.8.0.3) Gecko/20060426 Firefox/1.5.0.3 if a page have an image-tag with an mailto: in the src option, ff opens the mail-client on the pc. example: <img src="mailto:ex@mple.com"> the mailclient will appear. Reproducible: Didn't try Steps to Reproduce: 1. Create such a Code 2. Open The page with ff 1.5.0.3 Actual Results: your pc could be unusable Expected Results: ff should block this code

This was posted on bugtraq, no need for the confidential flag

*** This bug has been marked as a duplicate of 181860 ***